There is indeed such a table! I'm not sure if you have Discord, but if you do, join the Official SteemMonsters Discord Server. On it, you can navigate to a channel under "STEEM MONSTERS VOTER" called sm-voters_hut. Then send "$levels" in this channel and a bot will show you the table. It's also stickied on the buy-sell channel under "MT MOX MONSTER MARKET".
Here it is anyways:
RE: A Little Question About Leveling Up some Cards in Steem Monsters Game... [FR - EN]